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Calculate the Least Common Multiple or LCM of 90, 83, 3 and 10

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The instructions to find the LCM of 90, 83, 3 and 10 are the next:

1. Decompose all numbers into prime factors

902
453
153
55
1
8383
1
33
1
102
55
1

2. Write all numbers as the product of its prime factors

Prime factors of 90=2 . 32 . 5
Prime factors of 83=83
Prime factors of 3=3
Prime factors of 10=2 . 5

3. Choose the common and uncommon prime factors with the greatest exponent

Common prime factors: None

Common prime factors with the greatest exponent: None

Uncommon prime factors: 2 , 3 , 5 , 83

Uncommon prime factors with the greatest exponent: 21, 32, 51, 831

4. Calculate the Least Common Multiple or LCM

Remember, to find the LCM of several numbers you must multiply the common and uncommon prime factors with the greatest exponent of those numbers.

LCM = 21. 32. 51. 831 = 7470


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